Leonard Allen, owner of the pest-control business, said he had been concerned that his roof was sagging and managed to move some of his company trucks before the roof collapsed.

The other, at 2615 N. Fourth St., was inhabited by a business owner and his dog when the roof started collapsing.

"My shop dog, Macine, and I ran out as it was coming down," said Brian Rice, owner of Bedrock Jewelers, one of two tenants in the building.

The roof collapsed over a vacant space. "Most people know it as the old Wonder Bread store," Rice said.

Aside from Rice and his dog, the building was empty. A second business, ARI Abadan Reprographics & Imaging, was closed.

The cave-in occurred at 9 a.m. Rice heard popping and cracking sounds, and Macine, a yellow Lab, headed for the door with her tail between her legs. Rice followed her out while the eastern section of the building imploded.

Rice was waiting for a structural engineer to assess the building. He's hoping the section he rents is still sound. Most of the jewelry store's trade is repair and custom work. With Valentine's Day and wedding season coming up, Rice said he's heading into the busiest time of his year.